Engraving process and device



Nov. 8, 1927; 1348,782

s. E. RKZF.

ENGRAVING PROCESS AND DEVICE Filed May 29, 19 26 INVEN TOR allow 6 ATTORNEYS I WITNESSES & 6

Patented Nov. 8, 1927.

' SIDNEY E. RICE, OF TULSA, OKLAHOMA.

ENGRAVING PROCESS AND DEVICE.

Application filed May 29, 1926. Serial No. 112,643.

This invention relates to a process and. a device for producing engraved work from copper plates on the usual printing press. The printing from engraved plates is done entirely with specially constructed presses for the purpose and which requires considerable time, due to the fact that they are not capable of operating with the same speed as the usual printing presses and furthermore the equipping of a shop with these special presses for the purpose is too expensive unless the quantity of work done will warrant the same.

It is an object of my invention to provide a process and device adapted to be used in the ordinary printing press in connection with the usual platen whereby the engraved copper plates may be printed without necessitating the use of other equipment for the purpose.

A further object of the invention is the provision of a process in which the engraved copper plate is carried by the platen which is moved over into engagement with a steel block locked in the chase and which is of a proper height to contact with the copper plate when the press closes. A special make-ready is placed upon the steel block so that the proper impression is had from a stock when the press is operated.

This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawings forming a part of the specification; nevertheless it is to be understood that the invention is not contined to the disclosure, being susceptible of such changes and modifications which shall define no material departure from the salient features of the invention as expressed in the appended "claims.

In the drawings:

Figure 1 is a view in perspective of an ordinary printing press showing my improved attachment for printing engraved copper plates.

Figure 2 is a plan view of the platen showing the paper and engraved plate in position ready for printing.

Figure 3 is a transverse sectional view taken along the line 3-3 of Figure 2. I

Figure 4: is a vertical section of the chase.

Figure 5 is a view in perspective of the matrix for aiding in producing the engraved printing. I

Figure 6 is a plan view of the chase.

Referring more particularly to the drawlugs 10 designates a platen of a printing press adapted to be actuated in the usual manner towards the chase 11. Upon the platen 10 is provided cleats 12 which are adapted to engage the stock paper 13 and maintain the paper in proper position for printing.

In conjunction with the printing press I employ a pair of arms 14 which are connected together by a transverse bar 15 with the ends of the bar provided with sleeves 16 held in place on the bars 1 1 by set screws 17 The bar 15, as shown more particularly 1n Figure 3, is of U-shaped formation and with one edge of the flanges of the U-shaped bar being flared as shown at 18 to facilitate the insertion of the card stock to be engraved on 19. The card stock is fed into this U-shaped bar 15 to a guide, and may be adjusted longitudinally of the bar 15 or transversely of the platen 10 by loosening the set screws 17 and adjusting the screws 16 to the proper positions on the bars 14. In order to complete the process of printing by the engraved plates 19 I employ a steel block 20 which is held in position between two adjusting blocks 21 and 22 located within the chase 11. A screw 23 having a sliding cross head 24 is adapted to adjusting blocks 21 and 22.

Upon the outer face of the steel block 20 is provided a plurality of sheets of card board 25 which I term the n'iake-ready and these sheets of card board are secured to the outer exposed face of the steel block 20. The copper plate is moved into engagement with the steel block 20 and an impression or matrix 26 as shown in Figure .5 is formed by sufficient pressure of the copper plate on the outer card board surface so that an embossed section, as indicated at 26, is provided. The card board then is cutaway and only a small portion, as shown at 27, is left upon the outer face of the steel block 20.

In carrying out my process the plate 19 is properly positioned upon the platen 10 and adjusted to proper height for printing lock the block 20 in between the pair of and the engraved portion is filled With ink, the cardboard stock is fed into the bar 15 at proper position and the press is then operated in the usual manner and the matrix 26 cooperates with the engraved plate to force the ink out of the engraved plate on to the cardboard stock.

l/Vhat I claim is:

LA process for printing from engraved copper plates Which comprises forming a matrix of card board by forcing the card board into the engraved portion of the plate and then filling the engraved portion of the,

plate with ink and pressing stock paper between the plate and the matrix formed of card board.

2. A process for printing from engraved copper plates coin-prising engraving the cop per plates, pressing the engraved copper plate on acardboard for providing a matrix, then filling the engraved portions of the plate with ink, applying a sheet of stock paper between the plate and the matrix and forcing the stock paper into the engraved portions of the plate by thematrix.

sIDNEY E; Bron; 

